The 49ers may have filled a need, but Johnson isn’t exactly the type of receiver they were after. Instead, San Francisco adds another possession receiver to go along with Anquan Boldin and Michael Crabtree.

The 49ers still lack a receiver who can stretch the field. Over the last two seasons, Johnson caught only eight passes that traveled over 20 yards down-field, according to Pro Football Focus. TE Vernon Davis remains Colin Kaepernick’s most explosive target.

San Francisco may have targeted Johnson because of his success against the divisional rival Seahawks. In a 2012 game against Seattle, Johnson caught 12 passes for 115 yards and a touchdown.

The move will allow Anqaun Boldin to play more in the slot, where he’s most effective playing against smaller nickel backs. Per Pro Football Focus, the 49ers lined Boldin up in the slot 47 percent of the time in 2013.

In Baltimore, that number was around 62 percent, according to Pro Football Focus. Expect the 49ers to use him in a similar fashion next seasons.

With Johnson now in the fold, the 49ers can focus its efforts on rebuilding its secondary through the draft. The 49ers took S Jimmie Ward with the 30th pick in the first round, but are still in need of a cornerback.